The combination of mushrooms, red wine, meat, and walnuts is a match made in culinary heaven.
Preheat oven to 350 degrees Fahrenheit (180 degrees Celsius). Rice the stem and scrape out the gills from the mushrooms. Place in a large baking dish (preferably ceramic or Pyrex). Place the rinsed mushroom caps on top of the chopped stem pieces.
Combine the ketchup, apricot jam, spices, and garlic in a mixing bowl. Add the ground meat and mix. Take a quarter cup of walnuts and crush roughly. Add to meat mixture.
Fill each mushroom with a layer of meat mixture. Pour wine slowly over the meat, dividing evenly among the mushroom caps. Top with additional walnuts and bake uncovered for 30 minutes.